English

Characterization of rings with planar, toroidal or projective planar prime ideal sum graphs

Combinatorics 2024-04-19 v2 Commutative Algebra

Abstract

Let RR be a commutative ring with unity. The prime ideal sum graph PIS(R)\text{PIS}(R) of the ring RR is the simple undirected graph whose vertex set is the set of all nonzero proper ideals of RR and two distinct vertices II and JJ are adjacent if and only if I+JI + J is a prime ideal of RR. In this paper, we study some interplay between algebraic properties of rings and graph-theoretic properties of their prime ideal sum graphs. In this connection, we classify non-local commutative Artinian rings RR such that PIS(R)\text{PIS}(R) is of crosscap at most two. We prove that there does not exist a non-local commutative Artinian ring whose prime ideal sum graph is projective planar. Further, we classify non-local commutative Artinian rings of genus one prime ideal sum graphs.

Keywords

Cite

@article{arxiv.2210.15335,
  title  = {Characterization of rings with planar, toroidal or projective planar prime ideal sum graphs},
  author = {Praveen Mathil and Barkha Baloda and Jitender Kumar and A. Somasundaram},
  journal= {arXiv preprint arXiv:2210.15335},
  year   = {2024}
}

Comments

21 Figures, AKCE International Journal of Graphs and Combinatorics (Accepted, 18.4.24)